Updating redhat 9
Packages that have not been updated are a common cause of computer intrusions.
After this upgrade procedure, should you call into Red Hat for support, Red Hat will support the resulting system as if it were a clean installation only.
An attacker can easily rebuild a package with the same version number as the one that is supposed to fix the problem but with a different security exploit and release it on the Internet.
If this happens, using security measures, such as verifying files against the original Before installing any security errata, be sure to read any special instructions contained in the erratum report and execute them accordingly.
This patch is then applied to the Red Hat Enterprise Linux package and tested and released as an erratum update.
However, if an announcement does not include a patch, Red Hat developers first work with the maintainer of the software to fix the problem.Any issues not related to the upgrade will be supported.